20944-14-3Relevant academic research and scientific papers
Biomimetic Total Synthesis of Dysoxylum Alkaloids
Puerto Galvis, Carlos E.,Kouznetsov, Vladimir V.
, p. 15294 - 15308 (2019/11/29)
A five-step total synthesis of Dysoxylum alkaloids has been achieved using a biomimetic approach from zanthoxylamide protoalkaloids. The synthesis featured a direct amidation and a Bischler-Napieralski reaction to form the dihydroisoquinoline ring, which
Effect of 1-Substitution on Tetrahydroisoquinolines as Selective Antagonists for the Orexin-1 Receptor
Perrey, David A.,German, Nadezhda A.,Decker, Ann M.,Thorn, David,Li, Jun-Xu,Gilmour, Brian P.,Thomas, Brian F.,Harris, Danni L.,Runyon, Scott P.,Zhang, Yanan
, p. 599 - 614 (2015/04/27)
Selective blockade of the orexin-1 receptor (OX1) has been suggested as a potential approach to drug addiction therapy because of its role in modulating the brain's reward system. We have recently reported a series of tetrahydroisoquinoline-based OX1 selective antagonists. Aimed at elucidating structure-activity relationship requirements in other regions of the molecule and further enhancing OX1 potency and selectivity, we have designed and synthesized a series of analogues bearing a variety of substituents at the 1-position of the tetrahydroisoquinoline. The results show that an optimally substituted benzyl group is required for activity at the OX1 receptor. Several compounds with improved potency and/or selectivity have been identified. When combined with structural modifications that were previously found to improve selectivity, we have identified compound 73 (RTIOX-251) with an apparent dissociation constant (Ke) of 16.1 nM at the OX1 receptor and >620-fold selectivity over the OX2 receptor. In vivo, compound 73 was shown to block the development of locomotor sensitization to cocaine in rats. (Chemical Equation Presented).
Synthesis and radioligand binding studies of methoxylated 1,2,3,4-tetrahydroisoquinolinium derivatives as ligands of the apamin-sensitive Ca2+-activated K+ channels
Graulich, Amaury,Scuvée-Moreau, Jacqueline,Alleva, Livia,Lamy, Cédric,Waroux, Olivier,Seutin, Vincent,Liégeois, Jean-Fran?ois
, p. 7208 - 7214 (2007/10/03)
Several methoxylated 1,2,3,4-tetrahydroisoquinoliniums derived from N-methyl-laudanosine and N-methyl-noscapine were synthesized and evaluated for their affinity for apamin-sensitive binding sites. The quaternary ammonium derivatives have a higher affinit
